5.2y + 5.2y + y - 1 + y - 1
We can factor this into 2(5.2y) + 2(y - 1), which can be distributed to 10.4y + 2y - 2 = 12.4y - 2.
Simply adding also works, 10.4y + 2y - 2 = 12.4y - 2.
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It is linear. The highest power is 1 (x = x1, y = y1) so it is linear.
false
Y²-5Y+4=0 Y1=-(-5/2) - Square root of ((-5/2)²-4) Y1= 2.5 - Square root of 2.25 Y1 = 1 Y2=-(-5/2) + Square root of ((-5/2)²-4) Y2= 2.5 + Square root of 2.25 Y2 = 4 Y can be either 1 or 4
X , y1 , -92 , -133 , -17
Press the Y= button and type 'X+2' (not the quotes) next to Y1 (or any other Y will work). Then press GRAPH. (To type X, press the X,T,θ,n button. If you don't see Y1= when you press Y=, press MODE and select FUNC, then try again.)